BibTex format
@article{Graham:2011:10.1007/s11116-010-9310-0,
author = {Graham, DJ and Van, Dender K},
doi = {10.1007/s11116-010-9310-0},
journal = {TRANSPORTATION},
pages = {409--426},
title = {Estimating the agglomeration benefits of transport investments: some tests for stability},
url = {http://dx.doi.org/10.1007/s11116-010-9310-0},
volume = {38},
year = {2011}
}